Hey guys and gals, I was wondering what kind of tire pressure you guys would suggest running for auto-x? Ive got 225/45/17 michillen pilot sports. Ive been auto-xing for a semester now and have tried diff pressures with mixed results.. but i was just wondering what you more experienced people run? Thanks
I don't pay much attention to tire pressures usually. I have always had problems getting the back end to rotate. Last event Milo convinced me to check pressure, and I think we added more pressure in the rear. That day my car handled better than ever, I got the back end to swing around like I wanted and it was very good. Milo can give you a good idea on tire pressures.
How do you like the Pilot sports? I've got track wheels waiting on a tire decision.. Worth the money over Victoracers for a rookie? I want to try Hankook's but they are next to impossible to find. Is this a thread jack? Sorry if so..
I have heard good things about Toyo RA-1s. Good prices here: http://www.bmwwheels.com/bmwwheels_toyo_tires.asp Probably the best tire for both track and autocross. It also doesn't heat cycle like the victoracers. When Mere kills her Victoracers, she is getting V710s, as 275/40-17 fits without issues on the 05 STi if you use Rota 17x8 wheels. Also, we picked up a laser pyrometer, which will allow for checking tire temps after runs and figuring the optimal tire pressure. -- Brian
The pilot sports are not bad. ive been pretty happy with them. but then again these tires came on my car when i bought it so i cant comment too much about other brands. as far as race tires go.. you will have alot more grip with the R-compounds.. but alot of people have told me it is alot better to learn on street tires instead of race tires(Street tires are much more predictable) Personaly if i were in the market for street tires for auto-x or track(which i will be in the near future) i would not buy something as expensive as the michilens hoped this helped
Recently, I have been running much higher than normal. My tires have been paying the price. For the front, between 38-40, and for the rear 40-42. The higher tire pressure in the rear will prevent the tire from rolling over and should give more rotation. I am still experimenting though...